Under the front of the forend, on the left side, is a screw locking the rib to the post. When making adjustments be sure to loosen this screw. The rib may be tight on the post, if after making the adjustment, the top surface of the rib does not appear straight, raise or lower it by hand before retightening the screw.

Adjusting screw at the muzzle end for adjusting POI- turn clockwise to lower the POI, counter clockwise to raise the point of impact. One complete turn of this screw will equal about 2 inches at forty yards.

Good luck some screws may be frozen, be careful not to break them off.